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| Ext. | Description |
|---|---|
| D64 | Commodore 64 emulator disk file |
| DA0 | Windows registry backup |
| DAC | Sound (TI/MIT DAC format) (byte reversed ADC file) |
| DAT | Datafile |
| DAT | Video CD MPEG movie |
| DAT | WordPerfect merge DATa |
| DB | Paradox/dbVista/Smartware/XTreeGold DataBase |
| DB | dBASE IV/dBFast/MultiEdit configuration |
| DB# | Database (dBASE # / from dBASE IV renamed) |
| DB$ | dBASE/Modula2 temporary file |
| DB2 | dBASE II database |
| DB3 | dBASE III database |
| DBA | Turbo Prolog/DataEase database |
| DBC | Visual FoxPro DataBase Container file |
| DBD | Business Insight business data |
| DBD | Clarion Modula-2 debug info |
| DBF | dBASE/FoxPro/dBFast/DataBoss database |
| DBG | DeBuGger script (DOS debug/Watcom debugger) |
| DBG | Symbolic DeBuGing information (Ms C/C++) |
| DBK | dBASE Database Backup |
| DBM | DataEase datafile |
| DBM | DataBoss Menu template |
| DBO | dBASE IV compiled program |
| DBO | Program (dBASE IV / compiled) |
| DBQ | Paradox memo |
| DBS | Managing Your Money/ProDas/SQL Windows datafile |
| DBS | MS Word/Works printer description file |
| DBT | dBASE/dBFast memo text for database with same name |
| DBT | Clipper database text |
| DBT | FoxPro Foxbase+ style memo |
| DBT | DBF momo file |
| DBW | DataBoss Windows file |
| DBX | DataBeam image |
| DC5 | DataCAD drawing |
| DCA | Visual Basic active designer cache |
| DCA | Document Content Architecture text file (IBM DisplayWrite) |
| DCF | Disk image file |
| dcf | Driver Configuration File |
| DCL | Borland Delphi Component Library |
| DCM | DICOM/ACR image |
| DCP | Data/Device CodePage (OS/2) |
| DCR | Shockwave/Macromedia Director data |
| DCS | QuarkXPress bitmap image (Quark Desktop Color Separation EPS file) |
| DCS | Datafile (ACT! Activity Files) |
| DCS | Desktop Color Separation file |
| DCT | Dictionary |
| DCU | Borland Delphi Compiled Unit |
| DCX | ZSoft PC Paintbrush Multi-Page PCX, used as fax |
| DCX | FAX (PCC) |
| DD | DiskDoubler compressed Macintosh file archive |
| DDB | Bitmap image |
| DDE | Dynamic Data Exchange (binary) |
| DDF | Data Definition File describing database (Btrieve, Xtrieve) |
| DDI | DiskDupe disk image |
| DDIF | Bitmap image (DEC DDIF file) |
| DDP | OS/2 Device Driver Profile file |
| DEB | Debug script (DOS DEBug) |
| DEC | DECoded file |
| DEF | Linker DEFinition file, used in programming environments |
| DEF | Assembly header file (Geoworks Esp) |
| DEF | SmartWare II data |
| DEF | Defaults/Definitions |
| DEFI | Oracle 7 de-install script |
| DEM | VistaPro DEM image |
| DEM | USGS & GTopo30 3D file |
| DEM | Demonstration |
| dem | Demonstration |
| DEP | Visual Basic setup wizard DEPendency file |
| DER | Internet security certificate |
| DES | Description file |
| DESC | Description file |
| DEV | Device driver |
| DEWF | Macintosh SoundCap/SoundEdit instrument |
| DF | NCSA bitmap image (Hierarchical Data File) |
| DFD | Prosa Data Flow Diagram graphic |
| DFD | Dyadic functions (ABC programming language) |
| DFI | Digifont outline font description |
| DFL | Default program settings (Signature) |
| DFM | Prosa Data Flow Diagram model file |
| DFM | Borland Delphi/C++ Builder form file |
| DFS | Delight sound file |
| DFV | MS Word printing form |
| DFX | AutoCAD 3D/ CAD graphics |
| DFX | Micrografx effects (=DLL) |
| DGN | MicroStation CAD vector drawing |
| DGS | Diagnostics |
| DH | Geoworks dependency information for .ph |
| DHP | Dr. Halo bitmap image |
| DHT | Gauss data file |
| DIA | Diagraph graphics (Computer Support Corporation) |
| DIB | OS/2 or Windows bitmap image (Device Independent Bitmap) |
| DIC | Dictionary file |
| DIF | Visicalc database (Data Interchange Format) |
| DIF | Difference data file (Patch script) |
| DIF | OS/2 Display Information File |
| DIF | Video |
| DIFF | DIFFerence data file (Patch script) |
| DIG | Sound Designer I audio |
| DIL | Lotus library for graphic import (Approach) |
| DIP | Debug Info Processor (Watcom Debugger) |
| DIR | CPS Backup/VAX DIRectory file |
| DIR | Procomm Plus dialing DIRectory file |
| DIR | MacroMind Director 4.x movie format |
| DIR | Catalog file (CP Backup) |
| DIR | Telephone directory |
| DIR | Directory for dbm files |
| DIS | DKB & Qrt Ray-Tracer |
| DIS | VAX Mail DIStribution list |
| DIS | CorelDraw thesaurus |
| DIZ | Mostly as 'File_id.diz' a small description of a program (description in Zip) |
| DJVU | DjVu image |
| DKB | DKB-Trace Raytraced image |
| DL | Display/DL Viewer animation |
| DL | Animation (DL-View) |
| DLD | Lotus 1-2-3 data |
| DLG | U.S. Geological Survey Digital Line Graph vector image (geographical data) |
| DLG | Windows SDK DiaLoG editor data |
| DLG | DiaLoG resources (DN) |
| DLL | Windows or OS/2 Dynamic Link Library |
| DLM | FileMaker Pro data |
| DLS | Downloadable sound |
| DLS | Norton Disklock setup |
| DMD | Visual dBASE data module |
| DMD | Devicemanager |
| DMF | Delusion Digital Music File |
| DMF | Mod music file from X-Tracker |
| DMO | Demo |
| DMP | DuMP file (eg. screen or memory) |
| DMS | Compressed Amiga file archive (DiskMasher) |
| DMS | Disk archiver file |
| DN1 | Duke Nukem 1 data file |
| DOB | Visual Basic user document form file |
| DOC | Document file |
| DOG | Screen file (Laughing Dog Screen Maker) |
| DOH | Geoworks dependency information for .poh |
| DOK | DOKument, chances are it's a plain text file |
| DOS | DOS related file (Win95) |
| DOS | 1st Reader external command file |
| DOT | MS Word DOcument Template |
| DOT | CorelDraw line-type definition file |
| DOV | Programmteil von PCTools |
| DOX | Visual Basic user document binary form file |
| DOX | MultiMate 4.0/MS Word text document |
| DOZ | Description Out of Zip (VENDINFO) |
| DP | Daily Planner calendar file |
| DP | DataPhile data file |
| DP | Primary data file (THOR database) |
| DP | Common ground document |
| DPD | Dyadic predicates (ABC programming language) |
| DPJ | Borland Delphi project |
| DPL | Borland Delphi packed library |
| DPR | Borland C++/Delphi default project and state-related information |
| DPS | Color file |
| DPX | Digital moving Picture eXchange bitmap |
| DRAW | Vector image (Acorn's object-based format) |
| DRF | Micrografx-Draw vector file |
| DRS | WordPerfect for Win Display ReSource |
| DRV | Hardware DRiVer |
| DRW | Lotus Freelance image |
| DS | TWAIN Data Source (=DLL) |
| DS4 | Micrografx Designer vector image |
| DSA | PKCS7 signature, DSA |
| DSC | SoftImage SCene file |
| DSC | DeSCription file |
| DSC | Oracle DiSCard file |
| DSD | DataShaper database |
| DSF | Delusion Digital Sound File |
| DSF | Micrograpf Designer document |
| DSG | 'DOOM' savegame |
| DSK | Novell NetWare disk drivers |
| DSK | Borland C++ project DeSKtop |
| DSL | DSSSL Style Sheet |
| DSL | X-Tracker Sample Bibliothek |
| DSM | DSI Digital Sound Module |
| DSM | MS Developer Studio macro |
| DSN | ODBC Data Source |
| DSN | DeSigN (Object System Designer) |
| DSP | DLL used by Norton viewer |
| DSP | DiSPlay parameters (Signature) |
| DSP | Dynamic Studio Professional Module |
| DSP | Dr. Halo graphics DiSPlay driver |
| DSP | MS Developer Studio |
| DSQ | Corel query file |
| DSR | Visual Basic active DeSigneR file |
| DSR | WordPerfect for Win driver resource |
| DSS | Screensaver file (DCC) |
| DSS | Digital Soup Sound |
| DST | Embroidery machines graphics data |
| DST | WAIN (Scanner spec) data source DLL (Win) |
| DSW | Borland C++/MS Developer Studio project workspace |
| DSX | Visual Basic active designer binary file |
| DT_ | Data fork of a Macintosh file (Mac-ette) |
| DTA | Datafile |
| DTB | UnInstaller internal database file |
| DTD | Document Type Definition (SGML data) |
| DTED | Digital Terrain Elevation Data (geographical data format) |
| DTF | Q&A/PFS database file |
| DTM | DigiTrakker Module |
| DTP | PageMagic/Publish-It!/Publisher3 publication |
| DTP | Dokument von Press International, 1st Press oder Timeworks Publisher |
| DTX | Q&A file |
| DUN | Dial-up networking export file |
| DUP | Backup file (DUPlicate) |
| DV | Video |
| DV | Desqview Scriptfile |
| DVC | Lotus 1-2-3 data |
| DVG | GraphikWorks vector image |
| DVI | TeX DeVice Independent text document |
| DVP | AutoCAD DeVice Parameter file |
| DVP | DESQview program information file |
| DVP | AutoCAD device parameter file |
| DVP | Desqview configuration file |
| dvr | Device Driver |
| DW2 | DesignCAD for Windows drawing |
| DWB | Coryphaeus Software Designer workbench |
| DWC | DWC compressed file archive |
| DWC | Archiv (DWC - Dean W. Cooper's Packer) |
| DWD | DiamondWare digitized sound |
| DWF | CAD programs vector image |
| DWG | AutoCAD/Drafix vector image |
| DX | Text file (DEC WPS/DX format - DEC WPS Plus) |
| DX | Cross-reference data (THOR database) |
| DX | Data explorer document |
| DXB | AutoCAD drawing binary exchange format (vector) |
| dxb | Drawing Interchange Binary (AutoCAD) |
| DXN | Fujitsu dexNET fax |
| DXR | Macromedia Director protected (non-editable) movie |
| DY22 | Sound (Dyaxis format) (sampling rate 22k) |
| DY44 | Sound (Dyaxis format) (sampling rate 44k) |
| DYL | EPOC16 dynamic link library |
| DYN | Lotus 1-2-3 data |
Did you like my page, one of my freeware applications or online tools?
Then, please donate via PayPal in order to help keeping its content free - each amount is welcome!